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authorGabe Black <gblack@eecs.umich.edu>2007-06-14 20:52:22 +0000
committerGabe Black <gblack@eecs.umich.edu>2007-06-14 20:52:22 +0000
commit866cc8214ba1642c2af56ed14e9ca2cf8b1928cf (patch)
tree5de3396fae004a17052103b437858e1d1275854b /src/arch/x86/isa/specialize.isa
parenta8f65b18bc55fdb8ca888abfd0d991d12602fbf4 (diff)
downloadgem5-866cc8214ba1642c2af56ed14e9ca2cf8b1928cf.tar.xz
Implement a handful more instructions and differentiate macroops based on the operand types they expect.
--HG-- extra : convert_revision : f9c8e694a8c0eb33b988657dca03ab495b65bee8
Diffstat (limited to 'src/arch/x86/isa/specialize.isa')
-rw-r--r--src/arch/x86/isa/specialize.isa18
1 files changed, 13 insertions, 5 deletions
diff --git a/src/arch/x86/isa/specialize.isa b/src/arch/x86/isa/specialize.isa
index 96add3ab5..faf863351 100644
--- a/src/arch/x86/isa/specialize.isa
+++ b/src/arch/x86/isa/specialize.isa
@@ -66,16 +66,16 @@ let {{
# vals is a dict which matches case values with what should be decoded to.
# builder is called on the exploded contents of "vals" values to generate
# whatever code should be used.
- def doSplitDecode(Name, builder, switchVal, vals, default = None):
+ def doSplitDecode(builder, switchVal, vals, default = None):
blocks = OutputBlocks()
blocks.decode_block = 'switch(%s) {\n' % switchVal
for (val, todo) in vals.items():
- new_blocks = builder(Name, *todo)
+ new_blocks = builder(*todo)
new_blocks.decode_block = \
'\tcase %s: %s\n' % (val, new_blocks.decode_block)
blocks.append(new_blocks)
if default:
- new_blocks = builder(Name, *default)
+ new_blocks = builder(*default)
new_blocks.decode_block = \
'\tdefault: %s\n' % new_blocks.decode_block
blocks.append(new_blocks)
@@ -120,11 +120,13 @@ let {{
print "word"
else:
print "Didn't recognize fixed register size %s!" % opType.rsize
+ Name += "_R"
elif opType.tag == None or opType.size == None:
raise Exception, "Problem parsing operand tag: %s" % opType.tag
elif opType.tag in ("C", "D", "G", "P", "S", "T", "V"):
# Use the "reg" field of the ModRM byte to select the register
env.addReg(ModRMRegIndex)
+ Name += "_R"
elif opType.tag in ("E", "Q", "W"):
# This might refer to memory or to a register. We need to
# divide it up farther.
@@ -132,27 +134,33 @@ let {{
regTypes.pop(0)
regEnv = copy.copy(env)
regEnv.addReg(ModRMRMIndex)
+ regName = Name + "_R"
# This needs to refer to memory, but we'll fill in the details
# later. It needs to take into account unaligned memory
# addresses.
memTypes = copy.copy(opTypes)
memTypes.pop(0)
memEnv = copy.copy(env)
+ memName = Name + "_M"
print "%0"
- return doSplitDecode(Name, specializeInst, "MODRM_MOD",
- {"3" : (regTypes, regEnv)}, (memTypes, memEnv))
+ return doSplitDecode(specializeInst, "MODRM_MOD",
+ {"3" : (regName, regTypes, regEnv)},
+ (memName, memTypes, memEnv))
elif opType.tag in ("I", "J"):
# Immediates
print "IMMEDIATE"
+ Name += "_I"
elif opType.tag == "M":
# This needs to refer to memory, but we'll fill in the details
# later. It needs to take into account unaligned memory
# addresses.
print "%0"
+ Name += "_M"
elif opType.tag in ("PR", "R", "VR"):
# There should probably be a check here to verify that mod
# is equal to 11b
env.addReg(ModRMRMIndex)
+ Name += "_R"
else:
raise Exception, "Unrecognized tag %s." % opType.tag
opTypes.pop(0)